Thermal and moisture comfort of polybutylene terephthalate/polyethylene terephthalate weft-knitted sports T-shirt fabrics
Objective Leisure,sports,and fitness have become a life fashion.Increasing number of people participate in sports and fitness,and as a result people's requirements for sports and leisure clothing fabrics are gradually changing.Lightweight,permeable,soft,and comfortable sports fabrics with features such as diverse styles,environmental friendliness,and health benefit are favored by consumers.As people pay more attention to human health and comfort,textiles with thermal and moisture comfort performance have gained attention in the global market,and attracted research attention.The wearing comfort is largely affected by the thermal and moisture comfort performance of the fabric.Air permeability,moisture permeability,thermal resistance,water evaporation rate,and liquid moisture management ability are considered to be the key factors affecting the wearer's thermal and moisture comfort performance.Method In order to study the thermal and moisture comfort performance of sports and leisure T-shirt materials,13 kinds of polybutylene terephthalate/polyethylene terephthalate(PBT/PET)weft knitted sports T-shirt fabrics with different structure parameters were developed.By using a fabricair permeability tester,fabric moisture permeability tester,thermal resistance,moisture resistance tester,and liquid moisture management tester,five indexes of the polybutylene terephthalate/polyethylene terephthalate 13 kinds of PBT/PET weft knitted sports T-shirt fabrics,which are air permeability,moisture permeability,thermal resistance,moisture evaporation rate,and liquid moisture management ability,were tested.The influences of fabric structure and monofilament size on fabric thickness,surface density,porosity,and thermal and moisture comfort performance were investigated.The thermal and moisture comfort performance of 13 kinds of weft knitted single-side knitted fabrics was evaluated through gray cluster analysis based on five individual indexes.Results Using SPSS statistical software to conduct a one-way analysis of variance and correlation score,it was found that fabric structure and raw material monofilament size affected fabric porosity,and the correlation coefficients were 0.831 and 0.757(p<0.05),respectively.Fabric thickness and surface density were also important factors affecting the porosity.The correlation coefficients were-0.768 and-0.710(p<0.05).The microstructure and filament size were also found to affect the fabric's porosity,thickness,and surface density,and then affect the fabric's thermal and wet comfort properties such as air permeability,moisture permeability,thermal resistance,water evaporation rate,and liquid water management ability.The fabric structure was significantly correlated with the fabric's air permeability,moisture permeability,and thermal resistance,and the correlation coefficients were 0.783,0.631,and 0.684,respectively.The thickness of fabrics was significantly correlated with the moisture permeability and thermal resistance of the fabrics,and the correlation coefficients were 0.771 and 0.761,respectively.The air permeability,water evaporation rate,and overall water management ability of fabrics were significantly correlated with the monofilament size,and the correlation coefficients were 0.544,-0.628,and 0.692,respectively.The porosity of fabrics was significantly correlated with the air permeability,thermal resistance,and overall water management ability of the fabrics,and the correlation coefficients were 0.654,0.748,and 0.735,respectively.The surface density of fabrics was significantly correlated with the air permeability and overall water management ability of the fabrics,and the correlation coefficients were-0.688 and 0.709,respectively.Conclusion The gray cluster analysis was adopeed to comprehensively evaluate the thermal and moisture comfort performance of the 13 weft knitted sports T-shirt fabrics,and it was concluded that the single-sided weft knitted sports T-shirt fabrics with single jersay,jacquard(1)and single-bead mesh had better thermal and moisture comfort performance,which was more suitable for the sports and leisure field.
weft-knitted single sports T-shirt fabricthermal and moisture comfortair permeabilitymoisture permeabilitypolybutylene terephthalate/polyethylene terephthalate fiber
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